Brown Fused Alumina, also known as brown Corundum or brown sapphire, is a gem-grade mineral that belongs to the Corundum mineral family. Corundum is a very hard mineral, its chemical composition is alumina (Al2O3).
Ta'rif
1. High hardness: Brown Fused Alumina is very hard, ranking 9 on the Mohs hardness scale, second only to diamond. This gives brown corundum excellent wear resistance and durability in both jewelry and industrial fields.
2. Heat resistance:Brown Fused Alumina has good high temperature resistance. It can maintain its physical and chemical properties in high temperature environments, which makes it very useful in high temperature processing and grinding applications.
3. Versatility: Brown Fused Alumina can be used not only as a gemstone for jewelry, but also to make abrades and grinding tools. It can be cut and polished into a variety of shapes for different uses, such as sandpaper, grinding wheels, abrasive powder, etc.
4. Natural color: Brown Fused Alumina has an attractive brown, brownish-red or deep red color. This natural color gives brown corundum a unique appeal in jewelry design and can be used to make unique and personalized jewelry works.
5. Relatively Low price: Compared to other gem-grade corundum variants, such as ruby and sapphire, brown Fused Alumina is priced relatively low in the market. This makes it a more affordable option while still obtaining high-quality gems or abrasive materials.
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SiO2 Content (%) |
Less than or equal to 1.5% |
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Al2O3 Content (%) |
Greater than or equal to 95% |
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F 16-240, 0-1-3-5-8 mm, 0-200 mesh, 0-325 mesh |
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F 16-240, 0-1-3-5-8 mm, 0-200 mesh, 0-325 mesh |
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Al2O3 |
Greater than or equal to 95.00% |
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Fe2O3 |
Less than or equal to 0.3% |
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SiO2 |
Less than or equal to 1.50% |
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TiO2 |
Less than or equal to 3.00% |
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Less than or equal to 0.05% |
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1. Jewelry: Brown fused alumina can be cut and polished into stones of various shapes for use in jewelry designs. It can be used as the main stone for pendants, rings, earrings and other jewelry, giving it a unique brown color and personalized style.
2. Tools and abrasives: Because of its high hardness and wear resistance, brown fused alumina is widely used in the manufacture of abrasives and grinding tools. Brown fused alumina abrasive used in metal processing, stone processing, glass manufacturing and other industries polishing, grinding and cutting. It can be used as sandpaper, grinding wheel, abrasive powder and other forms.
3. Metallurgical field: Brown fused alumina is used as refractory in metallurgical field. Because of its high temperature resistance, it can be used to make firebricks, refractory coatings and other refractory products for heat insulation and protection in high temperature furnace and metallurgical processes.
4. High temperature equipment and instruments: The heat resistance of brown fused alumina makes it an ideal material for high temperature equipment and instruments. It can be used to make high temperature Windows, high temperature containers and high temperature sensors for a variety of high temperature applications, such as furnace observation, high temperature experiments and industrial heating process control.
5. Other applications: Brown fused alumina is also used in optics, electronics, chemistry and coatings. In the field of optics, it can be used to make infrared Windows and laser devices. In electronics, it can be used to make high voltage capacitors and power semiconductor devices. In the field of chemistry and coatings, it can be used as a catalyst and a component of anti-corrosion coatings.
A:Always a pre-production sample before mass production;Always final Inspection before shipment;
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Sizga ham yoqishi mumkin
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